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(Model.) Yg Y J. H. WOOLASTON 8v T. B. PRIDDY.

Look Escutcheon.

` No. 243,029. Patented June 14,1881.

N. Pnsns. mwumugmpw. wuhmgenn, u. c;

UNITED STATES PATENT OFFICE.

JOSEPH H. VVOOLASTON AND THOMAS B. PRIDDY, OF NEV HAVEN, CONNEC- TIOUT,ASSIGNORS TO THE BARNES MANUFACTURING COMPANY, OF

SAME PLACE.

LOCK-ESCUTCHEON.

SPECIFICATION forming part of Letters Patent No. 243,029, dated June 14,1881.

' Application lcd November 8,1880. (Model.)

To all whom it may concern:

Bc ir. known that we, J os. H. WooLAsToN and THOMAS B. PRIDDY, of NewHaven, in the county of New Haven and State ot' Connecticut, haveinvented new Lock and Latch Escutcheon; and We do hereby declare thefollowing, when taken in connection withthe accompanying drawings, andthe letters of reference marked thereon, to be a full, clear, and exactdescription of the same, and which said drawings constitute part of thisspecification, and represent, in

Figurc l,.a view from the inner or under side 5 Fig. 2, a transversecentral section enlarged; Fig. 3, an outside view.

This invention relates to an improvement in escutcheons for that classof locks which use a dat key, and in which it is necessary for that partof the escutcheon called the key-guide,

through which is the key-hole, to revolve or rotate with the key.

In the usual construction of this class of escuteheons the plate is madedat, and the r0- tating guide projects beyond the inner surface or planeof the plate. In the case of a thin door, or one in which the end ofthetube of the lock Will come flush with or near the surface of the door,such guides or escutcheens cannot be used, because the guide will strikethe'tube before the plate will set upon the surface ot' the door.

The object of this invention is to overcome this difculty, and produce asimple and cheap construction of this class of escutcheon; and itconsists in the construction hereinafter described, and particularlyrecited in the claim.

A represents the escutcheon-plate, through which is a central circularopening, B. This opening is made with an inwardly-projecting iiange, a,at the outside, and so as to have a shoulder on the inside. On thisshoulder the key-guide C is placed so as to lie against the iiange, andin the side of the opening in the escutcheon-plate an annular groove, d,is cut closein rear of the key-guide O. Then into this annular groove adivided ring, e, is introduced the ring e, the ring serving to hold thekeyguide in place and yet permit it to be rotated with the keyintroduced through the key-hole f therein. The plate A is raised at thecenter, so as to bring the shoulder on which the keyLguide rests so farfrom the plane of the rear or bearing surface of the plate that thewhole length of the key-guide will come forward or outside of the planeof the bearingsurface of the plate, as seen in Fig. 2, so that the tubeof the lock may come dash with the surface of the door withoutinterfering with the guide.

It will he understood from the foregoing that we do not broadly claim anescutcheonplate having a key-guide arranged therein so as to be rotatedby the key; neither do we broadly claim securing two parts of a thingtogether by means of a divided ring resting in lan internal annulargroove in one part, and so as to bear upon the other part, as such, weare aware, is not new; but

The escutcheon-plate A, constructed with the iiange a around its centralopening and so as to form a shoulder upon its rear side, and the annulargroove d in rear of said shoulder, combined with a key-guide, C,constructed to rest upon the said shoulder, and the divided ringintroduced into said groove el, in rear of and so as to bea-r upon thekey-guide,

to hold the key-guide in place and yet permit its rotation,substantially as described.

J. H. WOOLASTON. THOMAS B. PRIDDY.

Witnesses:

J. H. SHUMWAY, L. D. Roenes.

